OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:76:67:c2:9a:22:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7a:c1:98:78:54:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f6:4d:30:36:91:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c0:5a:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c0:5a:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
